(19)
(11) EP 1 619 890 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
05.12.2007 Bulletin 2007/49

(43) Date of publication A2:
25.01.2006 Bulletin 2006/04

(21) Application number: 05015786.6

(22) Date of filing: 20.07.2005
(51) International Patent Classification (IPC): 
H04N 5/74(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK YU

(30) Priority: 21.07.2004 JP 2004212581

(71) Applicant: SANYO ELECTRIC CO., LTD.
Moriguchi-shi, Osaka (JP)

(72) Inventors:
  • Yoshimura, Taichi
    Osaka-shi Osaka 553-0002 (JP)
  • Renbutsu, Tadashi
    Kasai-shi Hyogo 675-2303 (JP)
  • Watanabe, Tomonari
    Kobe-shi Hyogo 654-0143 (JP)

(74) Representative: Glawe, Delfs, Moll 
Patentanwälte Postfach 26 01 62
80058 München
80058 München (DE)

   


(54) Projection video display system


(57) In a projection video display system, display devices 31, 32, and 33 are irradiated with light emitted from a light source 1 housed in a body case 40, and a video image is projected to the outside of the body case 40. The system includes: a cooling fan for cooling the display devices 31, 32, and 33; and an air passage for guiding air generated by driving the cooling fan to the display devices 31, 32, and 33. Openings 60 for making the display devices 31, 32, and 33 communicate with outside air are formed in positions corresponding to at least the display devices 31, 32, and 33 in the body case 40.







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